| Message ID | 1357292050-12137-9-git-send-email-amarendra.xt@samsung.com |
|---|---|
| State | New |
| Headers | show |
Hi Amar, On Fri, Jan 4, 2013 at 1:34 AM, Amar <amarendra.xt@samsung.com> wrote: > This patch adds support for EMMC booting on SMDK5250. > > Changes from V1: > 1)Updated spl_boot.c file to maintain irom pointer table > instead of using the #define values defined in header file. > > Changes from V2: > 1)Updation of commit message and resubmition of proper patch set. > > Changes from V3: > No change. > > Signed-off-by: Amar <amarendra.xt@samsung.com> > --- > board/samsung/smdk5250/clock_init.c | 15 +++++++++++ > board/samsung/smdk5250/clock_init.h | 5 ++++ > board/samsung/smdk5250/spl_boot.c | 52 ++++++++++++++++++++++++++++++++----- > 3 files changed, 65 insertions(+), 7 deletions(-) > > diff --git a/board/samsung/smdk5250/clock_init.c b/board/samsung/smdk5250/clock_init.c > index c009ae5..154993c 100644 > --- a/board/samsung/smdk5250/clock_init.c > +++ b/board/samsung/smdk5250/clock_init.c > @@ -28,6 +28,7 @@ > #include <asm/arch/clk.h> > #include <asm/arch/clock.h> > #include <asm/arch/spl.h> > +#include <asm/arch/dwmmc.h> > > #include "clock_init.h" > #include "setup.h" > @@ -664,3 +665,17 @@ void clock_init_dp_clock(void) > /* We run DP at 267 Mhz */ > setbits_le32(&clk->div_disp1_0, CLK_DIV_DISP1_0_FIMD1); > } > + > +/* > + * Set clock divisor value for booting from EMMC. > + * Set DWMMC channel-0 clk div to operate mmc0 device at 50MHz. > + */ > +void emmc_boot_clk_div_set(void) > +{ > + struct exynos5_clock *clk = (struct exynos5_clock *)EXYNOS5_CLOCK_BASE; > + unsigned int div_mmc; > + > + div_mmc = readl((unsigned int) &clk->div_fsys1) & ~FSYS1_MMC0_DIV_MASK; > + div_mmc |= FSYS1_MMC0_DIV_VAL; > + writel(div_mmc, (unsigned int) &clk->div_fsys1); > +} > diff --git a/board/samsung/smdk5250/clock_init.h b/board/samsung/smdk5250/clock_init.h > index f751bcb..20a1d47 100644 > --- a/board/samsung/smdk5250/clock_init.h > +++ b/board/samsung/smdk5250/clock_init.h > @@ -146,4 +146,9 @@ struct mem_timings *clock_get_mem_timings(void); > * Initialize clock for the device > */ > void system_clock_init(void); > + > +/* > + * Set clock divisor value for booting from EMMC. > + */ > +void emmc_boot_clk_div_set(void); > #endif > diff --git a/board/samsung/smdk5250/spl_boot.c b/board/samsung/smdk5250/spl_boot.c > index d8f3c1e..906e197 100644 > --- a/board/samsung/smdk5250/spl_boot.c > +++ b/board/samsung/smdk5250/spl_boot.c > @@ -23,16 +23,38 @@ > #include<common.h> > #include<config.h> > > +#include <asm/arch-exynos/dmc.h> > +#include <asm/arch/clock.h> > +#include <asm/arch/clk.h> > + > +#include "clock_init.h" > + > +/* Index into irom ptr table */ > +enum index { > + MMC_INDEX, > + EMMC44_INDEX, > + EMMC44_END_INDEX, > + SPI_INDEX, > +}; > + > +/* IROM Function Pointers Table */ > +u32 irom_ptr_table[] = { > + [MMC_INDEX] = 0x02020030, /* iROM Function Pointer-SDMMC boot */ > + [EMMC44_INDEX] = 0x02020044, /* iROM Function Pointer-EMMC4.4 boot*/ > + [EMMC44_END_INDEX] = 0x02020048,/* iROM Function Pointer > + -EMMC4.4 end boot operation */ > + [SPI_INDEX] = 0x02020058, /* iROM Function Pointer-SPI boot */ > + }; > + > enum boot_mode { > BOOT_MODE_MMC = 4, > BOOT_MODE_SERIAL = 20, > + BOOT_MODE_EMMC = 8, /* EMMC4.4 */ > /* Boot based on Operating Mode pin settings */ > BOOT_MODE_OM = 32, > BOOT_MODE_USB, /* Boot using USB download */ > }; > > - typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst); > - > /* > * Copy U-boot from mmc to RAM: > * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains > @@ -40,23 +62,39 @@ enum boot_mode { > */ > void copy_uboot_to_ram(void) > { > - spi_copy_func_t spi_copy; > enum boot_mode bootmode; > - u32 (*copy_bl2)(u32, u32, u32); > - > + u32 (*spi_copy)(u32 offset, u32 nblock, u32 dst); > + u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst); > + u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst); > + void (*end_bootop_from_emmc)(void); > + /* read Operation Mode ststus register to find the bootmode */ > bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT; > > switch (bootmode) { > case BOOT_MODE_SERIAL: > - spi_copy = *(spi_copy_func_t *)EXYNOS_COPY_SPI_FNPTR_ADDR; > + spi_copy = (void *) *(u32 *)irom_ptr_table[SPI_INDEX]; This looks OK to me. My only suggestion is to put the lookup in a function like: static void *get_irom_func(int index) and avoid all the casting here. > spi_copy(SPI_FLASH_UBOOT_POS, CONFIG_BL2_SIZE, > CONFIG_SYS_TEXT_BASE); > break; Re SPI, the IROM performance is quite slow - do you plan to send up the U-Boot SPI code version? with a 32KB SPL there might be room to just use the normal driver. > case BOOT_MODE_MMC: > - copy_bl2 = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR; > + copy_bl2 = (void *) *(u32 *)irom_ptr_table[MMC_INDEX]; > copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, > CONFIG_SYS_TEXT_BASE); > break; > + case BOOT_MODE_EMMC: > + /* Set the FSYS1 clock divisor value for EMMC boot */ > + emmc_boot_clk_div_set(); > + > + copy_bl2_from_emmc = > + (void *) *(u32 *)irom_ptr_table[EMMC44_INDEX]; > + end_bootop_from_emmc = > + (void *) *(u32 *)irom_ptr_table[EMMC44_END_INDEX]; > + > + copy_bl2_from_emmc(BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE); > + end_bootop_from_emmc(); > + > + break; > + > default: > break; > } > -- > 1.8.0 > Regards, Simon
Hi Simon, Thanks for review comments. Please find my responses below. Thanks & Regards Amarendra On 10 January 2013 22:09, Simon Glass <sjg@chromium.org> wrote: > Hi Amar, > > On Fri, Jan 4, 2013 at 1:34 AM, Amar <amarendra.xt@samsung.com> wrote: > > This patch adds support for EMMC booting on SMDK5250. > > > > Changes from V1: > > 1)Updated spl_boot.c file to maintain irom pointer table > > instead of using the #define values defined in header file. > > > > Changes from V2: > > 1)Updation of commit message and resubmition of proper patch set. > > > > Changes from V3: > > No change. > > > > Signed-off-by: Amar <amarendra.xt@samsung.com> > > --- > > board/samsung/smdk5250/clock_init.c | 15 +++++++++++ > > board/samsung/smdk5250/clock_init.h | 5 ++++ > > board/samsung/smdk5250/spl_boot.c | 52 > ++++++++++++++++++++++++++++++++----- > > 3 files changed, 65 insertions(+), 7 deletions(-) > > > > diff --git a/board/samsung/smdk5250/clock_init.c > b/board/samsung/smdk5250/clock_init.c > > index c009ae5..154993c 100644 > > --- a/board/samsung/smdk5250/clock_init.c > > +++ b/board/samsung/smdk5250/clock_init.c > > @@ -28,6 +28,7 @@ > > #include <asm/arch/clk.h> > > #include <asm/arch/clock.h> > > #include <asm/arch/spl.h> > > +#include <asm/arch/dwmmc.h> > > > > #include "clock_init.h" > > #include "setup.h" > > @@ -664,3 +665,17 @@ void clock_init_dp_clock(void) > > /* We run DP at 267 Mhz */ > > setbits_le32(&clk->div_disp1_0, CLK_DIV_DISP1_0_FIMD1); > > } > > + > > +/* > > + * Set clock divisor value for booting from EMMC. > > + * Set DWMMC channel-0 clk div to operate mmc0 device at 50MHz. > > + */ > > +void emmc_boot_clk_div_set(void) > > +{ > > + struct exynos5_clock *clk = (struct exynos5_clock > *)EXYNOS5_CLOCK_BASE; > > + unsigned int div_mmc; > > + > > + div_mmc = readl((unsigned int) &clk->div_fsys1) & > ~FSYS1_MMC0_DIV_MASK; > > + div_mmc |= FSYS1_MMC0_DIV_VAL; > > + writel(div_mmc, (unsigned int) &clk->div_fsys1); > > +} > > diff --git a/board/samsung/smdk5250/clock_init.h > b/board/samsung/smdk5250/clock_init.h > > index f751bcb..20a1d47 100644 > > --- a/board/samsung/smdk5250/clock_init.h > > +++ b/board/samsung/smdk5250/clock_init.h > > @@ -146,4 +146,9 @@ struct mem_timings *clock_get_mem_timings(void); > > * Initialize clock for the device > > */ > > void system_clock_init(void); > > + > > +/* > > + * Set clock divisor value for booting from EMMC. > > + */ > > +void emmc_boot_clk_div_set(void); > > #endif > > diff --git a/board/samsung/smdk5250/spl_boot.c > b/board/samsung/smdk5250/spl_boot.c > > index d8f3c1e..906e197 100644 > > --- a/board/samsung/smdk5250/spl_boot.c > > +++ b/board/samsung/smdk5250/spl_boot.c > > @@ -23,16 +23,38 @@ > > #include<common.h> > > #include<config.h> > > > > +#include <asm/arch-exynos/dmc.h> > > +#include <asm/arch/clock.h> > > +#include <asm/arch/clk.h> > > + > > +#include "clock_init.h" > > + > > +/* Index into irom ptr table */ > > +enum index { > > + MMC_INDEX, > > + EMMC44_INDEX, > > + EMMC44_END_INDEX, > > + SPI_INDEX, > > +}; > > + > > +/* IROM Function Pointers Table */ > > +u32 irom_ptr_table[] = { > > + [MMC_INDEX] = 0x02020030, /* iROM Function Pointer-SDMMC > boot */ > > + [EMMC44_INDEX] = 0x02020044, /* iROM Function Pointer-EMMC4.4 > boot*/ > > + [EMMC44_END_INDEX] = 0x02020048,/* iROM Function Pointer > > + -EMMC4.4 end boot > operation */ > > + [SPI_INDEX] = 0x02020058, /* iROM Function Pointer-SPI > boot */ > > + }; > > + > > enum boot_mode { > > BOOT_MODE_MMC = 4, > > BOOT_MODE_SERIAL = 20, > > + BOOT_MODE_EMMC = 8, /* EMMC4.4 */ > > /* Boot based on Operating Mode pin settings */ > > BOOT_MODE_OM = 32, > > BOOT_MODE_USB, /* Boot using USB download */ > > }; > > > > - typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst); > > - > > /* > > * Copy U-boot from mmc to RAM: > > * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains > > @@ -40,23 +62,39 @@ enum boot_mode { > > */ > > void copy_uboot_to_ram(void) > > { > > - spi_copy_func_t spi_copy; > > enum boot_mode bootmode; > > - u32 (*copy_bl2)(u32, u32, u32); > > - > > + u32 (*spi_copy)(u32 offset, u32 nblock, u32 dst); > > + u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst); > > + u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst); > > + void (*end_bootop_from_emmc)(void); > > + /* read Operation Mode ststus register to find the bootmode */ > > bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT; > > > > switch (bootmode) { > > case BOOT_MODE_SERIAL: > > - spi_copy = *(spi_copy_func_t > *)EXYNOS_COPY_SPI_FNPTR_ADDR; > > + spi_copy = (void *) *(u32 *)irom_ptr_table[SPI_INDEX]; > > This looks OK to me. My only suggestion is to put the lookup in a function > like: > > static void *get_irom_func(int index) > > and avoid all the casting here. > > Ok will implement in next patch set. > > spi_copy(SPI_FLASH_UBOOT_POS, CONFIG_BL2_SIZE, > > CONFIG_SYS_TEXT_BASE); > > break; > > Re SPI, the IROM performance is quite slow - do you plan to send up > the U-Boot SPI code version? with a 32KB SPL there might be room to > just use the normal driver. > Ok shall be taken in a new patch set. > > > case BOOT_MODE_MMC: > > - copy_bl2 = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR; > > + copy_bl2 = (void *) *(u32 *)irom_ptr_table[MMC_INDEX]; > > copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, > > CONFIG_SYS_TEXT_BASE); > > break; > > + case BOOT_MODE_EMMC: > > + /* Set the FSYS1 clock divisor value for EMMC boot */ > > + emmc_boot_clk_div_set(); > > + > > + copy_bl2_from_emmc = > > + (void *) *(u32 *)irom_ptr_table[EMMC44_INDEX]; > > + end_bootop_from_emmc = > > + (void *) *(u32 > *)irom_ptr_table[EMMC44_END_INDEX]; > > + > > + copy_bl2_from_emmc(BL2_SIZE_BLOC_COUNT, > CONFIG_SYS_TEXT_BASE); > > + end_bootop_from_emmc(); > > + > > + break; > > + > > default: > > break; > > } > > -- > > 1.8.0 > > > > Regards, > Simon > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot >
diff --git a/board/samsung/smdk5250/clock_init.c b/board/samsung/smdk5250/clock_init.c index c009ae5..154993c 100644 --- a/board/samsung/smdk5250/clock_init.c +++ b/board/samsung/smdk5250/clock_init.c @@ -28,6 +28,7 @@ #include <asm/arch/clk.h> #include <asm/arch/clock.h> #include <asm/arch/spl.h> +#include <asm/arch/dwmmc.h> #include "clock_init.h" #include "setup.h" @@ -664,3 +665,17 @@ void clock_init_dp_clock(void) /* We run DP at 267 Mhz */ setbits_le32(&clk->div_disp1_0, CLK_DIV_DISP1_0_FIMD1); } + +/* + * Set clock divisor value for booting from EMMC. + * Set DWMMC channel-0 clk div to operate mmc0 device at 50MHz. + */ +void emmc_boot_clk_div_set(void) +{ + struct exynos5_clock *clk = (struct exynos5_clock *)EXYNOS5_CLOCK_BASE; + unsigned int div_mmc; + + div_mmc = readl((unsigned int) &clk->div_fsys1) & ~FSYS1_MMC0_DIV_MASK; + div_mmc |= FSYS1_MMC0_DIV_VAL; + writel(div_mmc, (unsigned int) &clk->div_fsys1); +} diff --git a/board/samsung/smdk5250/clock_init.h b/board/samsung/smdk5250/clock_init.h index f751bcb..20a1d47 100644 --- a/board/samsung/smdk5250/clock_init.h +++ b/board/samsung/smdk5250/clock_init.h @@ -146,4 +146,9 @@ struct mem_timings *clock_get_mem_timings(void); * Initialize clock for the device */ void system_clock_init(void); + +/* + * Set clock divisor value for booting from EMMC. + */ +void emmc_boot_clk_div_set(void); #endif diff --git a/board/samsung/smdk5250/spl_boot.c b/board/samsung/smdk5250/spl_boot.c index d8f3c1e..906e197 100644 --- a/board/samsung/smdk5250/spl_boot.c +++ b/board/samsung/smdk5250/spl_boot.c @@ -23,16 +23,38 @@ #include<common.h> #include<config.h> +#include <asm/arch-exynos/dmc.h> +#include <asm/arch/clock.h> +#include <asm/arch/clk.h> + +#include "clock_init.h" + +/* Index into irom ptr table */ +enum index { + MMC_INDEX, + EMMC44_INDEX, + EMMC44_END_INDEX, + SPI_INDEX, +}; + +/* IROM Function Pointers Table */ +u32 irom_ptr_table[] = { + [MMC_INDEX] = 0x02020030, /* iROM Function Pointer-SDMMC boot */ + [EMMC44_INDEX] = 0x02020044, /* iROM Function Pointer-EMMC4.4 boot*/ + [EMMC44_END_INDEX] = 0x02020048,/* iROM Function Pointer + -EMMC4.4 end boot operation */ + [SPI_INDEX] = 0x02020058, /* iROM Function Pointer-SPI boot */ + }; + enum boot_mode { BOOT_MODE_MMC = 4, BOOT_MODE_SERIAL = 20, + BOOT_MODE_EMMC = 8, /* EMMC4.4 */ /* Boot based on Operating Mode pin settings */ BOOT_MODE_OM = 32, BOOT_MODE_USB, /* Boot using USB download */ }; - typedef u32 (*spi_copy_func_t)(u32 offset, u32 nblock, u32 dst); - /* * Copy U-boot from mmc to RAM: * COPY_BL2_FNPTR_ADDR: Address in iRAM, which Contains @@ -40,23 +62,39 @@ enum boot_mode { */ void copy_uboot_to_ram(void) { - spi_copy_func_t spi_copy; enum boot_mode bootmode; - u32 (*copy_bl2)(u32, u32, u32); - + u32 (*spi_copy)(u32 offset, u32 nblock, u32 dst); + u32 (*copy_bl2)(u32 offset, u32 nblock, u32 dst); + u32 (*copy_bl2_from_emmc)(u32 nblock, u32 dst); + void (*end_bootop_from_emmc)(void); + /* read Operation Mode ststus register to find the bootmode */ bootmode = readl(EXYNOS5_POWER_BASE) & OM_STAT; switch (bootmode) { case BOOT_MODE_SERIAL: - spi_copy = *(spi_copy_func_t *)EXYNOS_COPY_SPI_FNPTR_ADDR; + spi_copy = (void *) *(u32 *)irom_ptr_table[SPI_INDEX]; spi_copy(SPI_FLASH_UBOOT_POS, CONFIG_BL2_SIZE, CONFIG_SYS_TEXT_BASE); break; case BOOT_MODE_MMC: - copy_bl2 = (void *) *(u32 *)COPY_BL2_FNPTR_ADDR; + copy_bl2 = (void *) *(u32 *)irom_ptr_table[MMC_INDEX]; copy_bl2(BL2_START_OFFSET, BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE); break; + case BOOT_MODE_EMMC: + /* Set the FSYS1 clock divisor value for EMMC boot */ + emmc_boot_clk_div_set(); + + copy_bl2_from_emmc = + (void *) *(u32 *)irom_ptr_table[EMMC44_INDEX]; + end_bootop_from_emmc = + (void *) *(u32 *)irom_ptr_table[EMMC44_END_INDEX]; + + copy_bl2_from_emmc(BL2_SIZE_BLOC_COUNT, CONFIG_SYS_TEXT_BASE); + end_bootop_from_emmc(); + + break; + default: break; }
This patch adds support for EMMC booting on SMDK5250. Changes from V1: 1)Updated spl_boot.c file to maintain irom pointer table instead of using the #define values defined in header file. Changes from V2: 1)Updation of commit message and resubmition of proper patch set. Changes from V3: No change. Signed-off-by: Amar <amarendra.xt@samsung.com> --- board/samsung/smdk5250/clock_init.c | 15 +++++++++++ board/samsung/smdk5250/clock_init.h | 5 ++++ board/samsung/smdk5250/spl_boot.c | 52 ++++++++++++++++++++++++++++++++----- 3 files changed, 65 insertions(+), 7 deletions(-)